<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>标签选择器</title>
    <style>
        div{
            color: pink;
        }
        p{
            color: aqua;
        }
        span{
            color: bisque;
        }
        .box1{
            font-size: 50px;
        }
        .box2{
            background-color: greenyellow;
            width: 300px;
            height: 150px;
        }
        #main{
            border: 10px solid peru;
        }
    </style>
</head>
<body>
    <div class="box1 box2">我是div标签选择器</div>
    <div id="main">我是div标签选择器</div>
    <p class="box1">我是段落标签</p>
    <span>我是行内标签</span>
</body>
</html>